TY JOUR TI PRECLINICAL STUDY OF A POLYVALENT VACCINE AGAINST BOVINE MASTITIS KW cows KW bovine mastitis KW polyvalent vaccine KW preclinical study of vaccine KW laboratory animals JO Bulletin of KSAU AU Makhmutov, A.F. AU Spiridonov, G.N. AU Dupleva, L.S. AU Husainov, I.T. AU Zaripov, A.S. PY 2025 IS 0 PB Krasnoyarsk State Agrarian University